[Xmonad] Removing the X11-extras dependency

[Don Stewart]

I'm about to remove the X11-extras dependency, by merging it 
into the main X11 library for Haskell.

Could people test that the new X11 snapshot builds on their 
machines?

    http://galois.com/~dons/X11-1.3.0.tar.gz

The brave can even go ahead and edit this xmonad.cabal file to 
remove the X11-extras dependency, to confirm that xmonad continues
to build.

Any failures should be reported.

Thanks!
    Don